ISO INTERNATIONAL STANDARD 4345 Second edition 1988-06-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION MEKAYHAPOAHAAOPIAHM3AUWHOCTAHAAPTW3ALMM Steel wire ropes - Fibre main cores - Specification Cables en acier -- Ames centrales en textile - Spécifications Referencenumber ISO 4345:1988 (E) No reproduction or networking permitted without license from IHS Not for Resale ISO 4345:1988 (E) Foreword ISo (the International Organization for Standardization) is a worldwide federation of national standards bodies (Iso member bodies). The work of preparing International Standards is normally carried out through Iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with Iso, also take part in the work. ISo collaborates closely with the international Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the ISo Council. They are approved in accordance with ISo procedures requiring at least 75 % approval by the member bodies voting. International Standard ISO 4345 was prepared by Technical Committee ISO/TC 105, Steel wire ropes. This second edition cancels and replaces the first edition (IS0 4345 : 1977), of which it constitutesatechnical revision. Annexes A, B, C, D and E form an integral part of this International Standard. @ International Organization for Standardization, 1988 Printed in Switzerland Copyright International Organization n for Standardization No reproduction or networking permitted without license from IHS Not for Resale ISO 4345 : 1988 (E) INTERNATIONAL STANDARD Steel wire ropes - Fibre main cores - Specifications Scope between the core manufacturer and the wire rope manufac- turer. The core manufacturer shall state whether the runnage is This International Standard specifies the construction and based on the lubricated or unlubricated core. characteristics of fibremain coresfor steelwire ropesusing two types of fibre : 6 Tolerances a) natural; b)man-made Thetolerances on the ordered length,l,shall beas follows: This International Standard is not applicable to ropes for mine hoistingpurposes. 1 >400m: 20 mforeach1000morpartthereof NOTE -- Fibre cores may be adversely affected by high ambient temperatures; when selecting fibre cores,the limitation of specific fibres in this respect should be recognized. The tolerances onnominal diameter and nominal runnage,ex- pressed as percentages, shall be as given in table 1. Table 1 2 Natural fibre cores Tolerances expressedas a percentage Natural fibre cores shall be made from new hard fibres of the Tolerances on following types : Type of fibre nominal diameter,D nominal sisal (Agave sisalana); runnage abaca; Manila hemp (Musa textilis). Natural fibre 3 Man-made fibre cores 4 mm<D<7mm: + Man-made fibre + Man-made fibre cores shall be made entirely from new fibres of the following types : fibre-forming polyolefines (i.e. monofilament, film or fibrillated film of polyethylene, polypropylene, etc.); Core lubricants any suitable alternative materials agreed between core Lubricants used for cores shall be acid-free and shall not con- purchaser and core supplier. tain moisture. The lubricant content of pre-lubricated cores shall be agreed 4 Construction between the core purchaser and the core manufacturer; it shal! Main cores complying with this International Standard shall be be measuredin accordarce withthe method specified in laid up from at least three strands. Each coil shall be continuous annex C. throughout its length without core splices. 8 Water soluble acids1) 5 Core designation The acidityofthe core shall benot more than2ml of a The core shal